Contact-breaker.



'PATENTED JULY 21 G. A. UNTERBERG.

'CONTAGT BREAKER.

APPLICATION FILED APR.16.1907.

. \NVENTBR, GusTAv'ADoLF UNTERBERG WwTNzssEs;

UNITED STATES PATENT OFFICE.

CONTACT-BREAKER.

Specification of Letters Patent.

Patented July 2 1, 1908.

Application filed April 16, 1907. Serial No. 368,609.

To all whom it may concern:

Be it known that I, GUSTAV AnoLF U TERBERG, a citizen of the GermanEmpire, and resident of Karlsruhe-Miihlburg,'Baden, German Empire, haveinvented new and useful Improvements in Contact-Breakers, of which thefollowing is a description.

The present invention relatesv to contact breakers for electricaligniting devices and the object is to construct the contact breaker sothat it may easily be taken out of themachine and replaced, in case ofdefect, or for examination or for any other reason, without having todisconnect the operating lever system, or any other parts of themachine.

In order to render the present specification easily intelligiblereference ishad to the accompanying drawing in which similarletters ofreference denote'similar parts throughout the several views Figure 1 isa longitudinal section through the device, Fig. 2 a crosssection on lineA.A of Fig. 1. Fig. 3 a plan view partly in section and Fig. 4 is aninterior view of the cap and the mechanism mounted therein.

The contact breaker, consisting of the fixed member a and the double armlever b b is mounted in the cap c,which latter fits into the ring d withits annular flange c, and may be fixed therein by means of" a screw e.Thus the contact breaker will be turned together with the ring (1 bymeans of the known lever system, which operates the arm (1'. The contactis operated by'means of-the cam ring it, which is attached to thearmature shaft g by means of the disk f, the'said cam ring operating thepin 6 ofthe lever arm 1).

Thus it'will be seen that it is possible to re move the contact breakerfrom the machine by simply releasing the screw e and taking oil the cap0. I

In addition to the other advantages, the device has the furtheradvantage that by loosening the screw 6 the contact breaker can beeasily adjusted as regards the cam ring it,

thus rendering possible a most accurate ad- 'GUSTAV ADOLF UNTERBERG.

Witnesses:

HANS MUNERBERG, Jos. H. LEUTE.

